Blocky artifact on VDB inside a principled volume

[walt1 (Walter Volbers)]

too bad,

I also had this once I got the boxes when several VDB overlapped, it has become better with increasing the transparency.

Volume artefacts

Had the problem now too, even if the post is older, Just in case it causes problems again. In my case, it was the number of Max Transparency Bounces. [transparency]